WO2007124793A2 - Joint d'etancheite a cadre support de poids reduit - Google Patents

Joint d'etancheite a cadre support de poids reduit Download PDF

Info

Publication number
WO2007124793A2
WO2007124793A2 PCT/EP2007/000789 EP2007000789W WO2007124793A2 WO 2007124793 A2 WO2007124793 A2 WO 2007124793A2 EP 2007000789 W EP2007000789 W EP 2007000789W WO 2007124793 A2 WO2007124793 A2 WO 2007124793A2
Authority
WO
WIPO (PCT)
Prior art keywords
support frame
recesses
seal
carrier frame
frame
Prior art date
Application number
PCT/EP2007/000789
Other languages
German (de)
English (en)
Other versions
WO2007124793A3 (fr
Inventor
Ralf Salameh
Original Assignee
Federal-Mogul Sealing Systems Bretten Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Federal-Mogul Sealing Systems Bretten Gmbh filed Critical Federal-Mogul Sealing Systems Bretten Gmbh
Priority to EP07703143A priority Critical patent/EP2041460B1/fr
Publication of WO2007124793A2 publication Critical patent/WO2007124793A2/fr
Publication of WO2007124793A3 publication Critical patent/WO2007124793A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
    • F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
    • F16J15/127—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement the reinforcement being a compression stopper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions

Definitions

  • the present invention relates to carrier frame seals. More particularly, the present invention relates to girder seals having a metal support frame and an elastomeric gasket molded to the metal girder frame.
  • the present invention provides a particularly lightweight, reduced weight support frame seal such as used in vehicle engines as the sump seal.
  • Carrier frame seals with a front-side molded sealing profile are preferably used at sealing points in the engine and transmission area. Sealing points are, for example, oil pan seals or control housing seals.
  • Support frames are usually made of aluminum, since this results in weight advantages, but there are also used support frame seals with steel frame. The cost advantage of steel compared to aluminum is often compensated for in steel girder frames by the necessary more costly corrosion protection.
  • the support frames are generally made of steel or aluminum sheet with a thickness of about 1 to 2 mm. The support frames are usually punched out of the coil.
  • the basic operation of girder seals is a true separation of functions in the areas of transferring the bolting forces, absorbing the compressive forces and creating the sealing function.
  • the rigid support frame which directly carries the power flow between the flanges, takes over the function of supporting the screw forces.
  • the support frame limits the setting when screwing on the support plate sealing gap exactly to the extent of the thickness of the support frame.
  • the sealing lips made of elastomer material can therefore not be overstressed and work in a precisely defined (working) tolerance range.
  • the support frame widths for such seals are essentially designed as follows: The sealing lips of elastomeric material, which are arranged in the direction of the medium, require a certain amount of space. Then, the support frame is constructed, which then generally fills the gap between the flanges to the outer contour of the components to be sealed on the sealing surface to the outside.
  • the support frame can follow more complicated sealing processes and flange geometries.
  • Known support frames are provided with openings to perform screws at the attachment points through the support frame.
  • openings may be provided on the support frame, which serve to fix, for example, the support frame in the injection mold or to allow automated handling of the parts. These openings are generally single or a few small diameter openings.
  • a carrier frame seal should be weight-optimized.
  • Functionality primarily addresses the function of technical tightness, which, secondarily, may also affect properties such as rigidity of the support frame, manufacturing processes, handling and assembly of the support frame seal.
  • weight optimization of gensets has been largely limited to reducing the weight of the heaviest parts.
  • engine blocks are optimized, it will be necessary in future to optimize smaller parts, such as cylinder heads, sump or cylinder head covers, in terms of weight.
  • Another object of the invention is to reduce the material usage for girder seals, which can directly lead to material savings.
  • a support frame for a support frame seal having a support frame and a seal member (e.g., an elastomeric seal) molded on the support frame.
  • the support frame is provided with recesses for weight reduction of the support frame.
  • the support frame of the present invention is based on locating recesses in the support frame which do not serve to insert screws, conduits, fasten the elastomeric seal (s) and / or handle / centering in the manufacture of a support frame seal.
  • the recesses in the support frame serve only to reduce the weight of the support frame and thus also to reduce the use of material in the production of the support frame.
  • a support frame seal with a support frame and a molded on the support frame sealing element (eg an elastomeric seal).
  • the support frame of the support frame seal is provided according to the invention with recesses for reducing the weight of the support frame.
  • the recesses are preferably arranged in the support frame, that no significant changes to the support frame are necessary.
  • the recesses are arranged along the neutral fiber of the support frame.
  • small recesses disposed along the neutral fiber of the support frame can save weight without having to make any other changes to the support frame seal or support frame.
  • the recesses in the support frame are round or rounded.
  • the support frame in the form of perforated plates as used for example in the construction of Zeppelinen
  • the design of such recesses is relatively simple, since it is only necessary to define a residual strength between the edge of the support frame and the recess or for example between two recesses, which ensure the function of the support frame.
  • the support frame forms a framework through the recesses.
  • Truss structures are the simplest and most effective support structures in the field of technology, are easy to manufacture, easy to design and optimize. In particular, it is easily possible to find the ideal shape for the truss structure of a girder frame in the predetermined area that the girder frame of a girder seal can assume by using CAD and optimization programs. It should be noted that the framework can be executed in particular as a two-dimensional framework.
  • the support frame is made of expanded metal.
  • the use of expanded metal allows the Production of truss-like structures without any waste.
  • the expanded metal may be rolled or pressed for ease of processing prior to application of the elastomeric layer to achieve a smooth support frame. It may also be advantageous to make the expanded metal by cutting and pulling in the plane of the support frame. It may be particularly advantageous when using expanded metal to use a work-hardening material. It may also prove advantageous to bend the support frame from a strip of expanded metal or metal framework. This eliminates the need for a suitable choice of materials and the structures to be used for waste (which may require additional molding and joining steps).
  • the support frame of the support frame seal is made of smooth expanded metal.
  • Smooth expanded metal can be processed in principle like normal sheet metal. Expanded metal can be smoothed by rolling or pressing.
  • the recesses make up at least 20% of the area of the support frame.
  • the support frame With a small weight or area reduction of the support frame (between, for example, 20% and 35% of the area of the support frame) can with skillful choice of the shapes of the recesses or the choice of the positions of the recesses a weight reduction without a significant change in the outer shape or contour of the support frame can be achieved. It should in particular be possible to maintain the outer contour of the support frame, so that it is not necessary that the support frame projects beyond the outer edge of the components to be sealed. In a further embodiment of the present invention, the recesses make up at least 35% of the area of the support frame.
  • weight reduction can be achieved without a substantial change in the external shape of the support frame can be achieved. It should in particular be possible to maintain the outer contour of the support frame, so that it is not necessary that the support frame projects beyond the outer edge of the components to be sealed.
  • the recesses make up at least 55% of the area of the support frame.
  • a slightly higher or lower weight or area reduction of the support frame can with skillful choice of the shapes of the recesses and / or the choice of the positions of the recesses a significant weight reduction without a significant change the outer shape of the support frame can be achieved.
  • the recesses may be designed as through holes.
  • the recesses may also be designed only as depressions. If the recesses are introduced, for example, at both sealing surfaces in the support frame, the support frame can be given essentially the cross section of a double-T-beam.
  • the sealing element for example an elastomeric seal
  • the sealing element is injection-molded on the front side of the carrier frame.
  • it is not necessary to coat the top and bottom of the support frame with elastomer.
  • Another advantage resulting from this construction is that no shear forces occur between, for example, the elastomeric part serving as the sealing element and the support frame. It is therefore possible to dispense with special precautions (such as special surface treatments, holding structures or apertures in the area of the elastomer sealing area) for bonding the elastomeric sealing part to the carrier frame.
  • FIG. 1 illustrates a top view, a cross-sectional view and a detail view of a conventional carrier frame seal.
  • FIG. 2 shows a plan view and a detailed view of an embodiment according to the invention of a carrier frame seal.
  • FIG. 3 shows a sectioned detail view of the detail view of FIG. 2.
  • FIGS. 4 to 6 are sectional views of various embodiments of carrier frame gaskets according to the invention.
  • the same reference numerals are used both in the figures and in the description for the same or similar elements.
  • the figures may be wholly or partly schematic and not to scale.
  • the support frame is shown in some figures for clarity without a sealing element.
  • Figure 1 illustrates various views of a conventional carrier frame seal 2.
  • To the carrier frame 6 of the conventional carrier frame seal 2 holes 12 are provided for screws. Through these holes 12 for screws, the conventional carrier frame seal 2 can be centered and held between the respective sealing surfaces.
  • a sealing element 8 is mounted made of elastomeric material, which is provided with sealing lips 10.
  • FIG. 1 a detail view of the support frame 6 of the conventional support frame seal 2 is shown. In this view, in particular, the holes 12 are shown for screws.
  • FIG. 2 shows a plan view and a detailed view of an embodiment of a carrier frame seal 4 according to the invention.
  • the carrier frame 6 with round recesses 14 for weight reduction is shown in the plan view of FIG.
  • the arrangement of the round recesses 14 for weight reduction along the neutral fiber 20 of the carrier frame can be seen.
  • FIG. 3 illustrates a dimensioned detail view of the detail view of FIG. 2.
  • the dimensions of the webs remaining around the round recesses 14 for weight reduction are illustrated in an exemplary embodiment.
  • FIG. 4 shows a detail view of an embodiment of a carrier frame seal according to the invention with round recesses 14 for weight reduction different diameters.
  • FIG. 5 shows a sectional view of an embodiment of a carrier frame seal according to the invention with angular recesses 16 for weight reduction.
  • the carrier frame of FIG. 5 forms a substantially two-dimensional framework.
  • FIG. 6 shows a detail view of an embodiment of a carrier frame seal according to the invention with angular recesses 16 for weight reduction.
  • the recesses are formed in an expanded metal structure 18.
  • the expanded metal structure can be designed either as a pressed or rolled structure, so that the expanded metal structure does not lead to an increase in thickness of the support frame.
  • An unpressed expanded metal structure can be used, for example, in connection with folded outer or inner edges, so that the support frame in cross-section has approximately the structure of a double-T-beam.
  • This minimum wall thickness should be achieved on the inside and outside.
  • webs subjected to tensile stress can be made thinner.
  • pressure-stressed webs can be made thicker (tension and pressure respectively in the plane of the sealing surfaces). The ⁇ ffhungsstreet with round recesses can therefore automatically from the required width of the webs result.
  • Holes with diameters of less than approx. 2 mm are not considered sensible, since otherwise the punching tool and / or punching process would be too costly and therefore a reasonable cost-benefit ratio can not be achieved.
  • holes with diameters of less than 2 mm can also be produced by laser cutting processes.
  • the openings can be punched out so that there is a minimum wall thickness (remaining width of the frame) of 1.0 to 1.5 mm in the edge region.
  • the ratios of the wall thicknesses can be chosen so that about 0.5 mm are added to the thickness of the support frame in order to ensure optimum conditions for the subsequent Anspritzrind the sealing area. If a certain minimum width is undershot for a given thickness, the punched geometries on the upper side will have large indentations, which can lead to process problems during sealing in elastomer injection molding when the sealing areas are applied.
  • the present invention provides support frames for girder grommets that are at least as stiff with conventional weight and cost savings as conventional girder frames.
  • the support frame can achieve good material utilization, low weight and, in particular, maximum rigidity.
  • the weight savings on the carrier frame seal are in particular two advantages to consider, on the one hand, the weight savings on the carrier frame seal, however, compared to, for example, to the total weight of an engine, rather than small, and on the other hand, the reduced material consumption in the production, especially in the recovery of the cut out support frame / sheet metal parts positively.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

L'invention concerne un cadre support pour un joint d'étanchéité à cadre support avec un cadre support 6 et un élément d'étanchéité 8 moulé sur le cadre support 6. Le cadre support 6 présente des évidements 14, 16 pour réduire le poids du cadre support.
PCT/EP2007/000789 2006-05-03 2007-01-30 Joint d'etancheite a cadre support de poids reduit WO2007124793A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07703143A EP2041460B1 (fr) 2006-05-03 2007-01-30 Joint d'etancheite a cadre support de poids reduit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006020539.1 2006-05-03
DE200610020539 DE102006020539A1 (de) 2006-05-03 2006-05-03 Trägerrahmendichtung mit verringertem Gewicht

Publications (2)

Publication Number Publication Date
WO2007124793A2 true WO2007124793A2 (fr) 2007-11-08
WO2007124793A3 WO2007124793A3 (fr) 2009-04-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/000789 WO2007124793A2 (fr) 2006-05-03 2007-01-30 Joint d'etancheite a cadre support de poids reduit

Country Status (3)

Country Link
EP (1) EP2041460B1 (fr)
DE (1) DE102006020539A1 (fr)
WO (1) WO2007124793A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009004303U1 (de) * 2009-03-26 2010-08-12 Weidmüller Interface GmbH & Co. KG Gehäusedichtung
DE102010021834A1 (de) * 2010-05-28 2011-12-01 Lannewehr + Thomsen GmbH & Co. KG Ingenieurbüro für Apparate-, Rohrleitungs- und Dichtungstechnik Losflanschverbindung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106372336A (zh) * 2016-09-05 2017-02-01 重庆茂捷汽车变速器有限公司 一种基于web技术的汽车变速箱轴垫片自动选配系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281228A1 (fr) * 1987-01-28 1988-09-07 Dow Corning Corporation Fabrication de joints
DE3831414A1 (de) * 1988-09-15 1990-03-22 Bruss Dichtungstechnik Formstabile gummiformdichtung, insbesondere oelwannen- oder zylinderkopfhaubendichtung, fuer eine brennkraftmaschine
US4997193A (en) * 1990-05-18 1991-03-05 Fel-Pro Incorporated Oil pan gasket and method of making same
DE4427168C1 (de) * 1994-08-01 1995-09-14 Elringklinger Gmbh Insbesondere für Brennkraftmaschinen vorgesehene Dichtung
WO2005121611A1 (fr) * 2004-06-08 2005-12-22 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Joint de structure support comportant des elements de fixation destine a l'etanchage de composants de moteur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281228A1 (fr) * 1987-01-28 1988-09-07 Dow Corning Corporation Fabrication de joints
DE3831414A1 (de) * 1988-09-15 1990-03-22 Bruss Dichtungstechnik Formstabile gummiformdichtung, insbesondere oelwannen- oder zylinderkopfhaubendichtung, fuer eine brennkraftmaschine
US4997193A (en) * 1990-05-18 1991-03-05 Fel-Pro Incorporated Oil pan gasket and method of making same
DE4427168C1 (de) * 1994-08-01 1995-09-14 Elringklinger Gmbh Insbesondere für Brennkraftmaschinen vorgesehene Dichtung
WO2005121611A1 (fr) * 2004-06-08 2005-12-22 Federal-Mogul Sealing Systems Bretten Gmbh & Co. Kg Joint de structure support comportant des elements de fixation destine a l'etanchage de composants de moteur

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EUGENE I. RIVIN: "Stiffness and Damping in Mechanical Design" 1999, MARCEL DEKKER, INC. , NEW YORK , XP002515278 Chapter 2.5: Stiffness of Frame/Bed Components Abbildung 2.21 *
FALK, A., BARTHOLD F.J., STEIN, E.: "A hierarchical design concept for shape optimization based on the interaction of CAGD and FEM" STRUCTURAL OPTIMIZATION, Bd. 18, Nr. 1, 1999, Seiten 12-23, XP002515277 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009004303U1 (de) * 2009-03-26 2010-08-12 Weidmüller Interface GmbH & Co. KG Gehäusedichtung
DE102010021834A1 (de) * 2010-05-28 2011-12-01 Lannewehr + Thomsen GmbH & Co. KG Ingenieurbüro für Apparate-, Rohrleitungs- und Dichtungstechnik Losflanschverbindung

Also Published As

Publication number Publication date
WO2007124793A3 (fr) 2009-04-30
EP2041460A2 (fr) 2009-04-01
DE102006020539A1 (de) 2007-11-15
EP2041460B1 (fr) 2013-01-16

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